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首页> 外文期刊>International Journal of Production Research >Raw material release rates to ensure desired production lead time in Bernoulli serial lines
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Raw material release rates to ensure desired production lead time in Bernoulli serial lines

机译：原材料释放速率，以确保在Bernoulli系列生产线中达到所需的生产提前期

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摘要

Production systems are often managed to maximise their production rate (PR). In some cases, this leads to excessive work-in-process and, as a result, long production lead time (LT). This issue is of particular importance in systems with 'unlimited' buffer space, where LT may also become unlimited. The question addressed in this paper is: What should be the release rate of raw materials so that the desired LT is obtained, while PR is maximised? We answer this question for serial lines with infinite buffers and machines obeying the Bernoulli reliability model. Specifically, given a serial line, we quantify the set of attainable LTs (feasible set), and for each point in the feasible set provide the release rate (as a function of machine parameters) that guarantees the desired lead time, while maximising the production rate. In addition, we offer a feedback control law that enforces the desired system behaviour. The development is based on a recursive aggregation procedure that leads to analytical estimates of LT. The accuracy of these estimates is evaluated by simulations and is shown to be acceptable for practical applications (well within 5%). The results obtained offer small- and mid-size enterprises the possibility of managing their production lead time, when neither limited buffers nor kanban/ CONWIP systems are available, by releasing raw materials on, say, an hourly basis.
机译：通常管理生产系统以最大化其生产率（PR）。在某些情况下，这会导致过多的在制品，从而导致较长的生产提前期（LT）。在具有“无限”缓冲区空间的系统中，此问题尤其重要，其中LT也可能变为无限。本文所要解决的问题是：原料的释放速率应为多少才能使所需的LT得到最大化，而PR达到最大？对于具有无限缓冲区的串行线和遵循伯努利可靠性模型的机器，我们回答此问题。具体来说，给定一条串行线，我们量化可获得的LT的集合（可行的集合），并为可行集合中的每个点提供释放速率（作为机器参数的函数），以保证所需的交货时间，同时使产量最大化率。此外，我们提供了一种反馈控制法则，可以强制执行所需的系统行为。该开发基于递归聚合程序，该程序导致对LT进行分析估计。这些估计的准确性通过仿真进行评估，并被证明对于实际应用是可以接受的（不超过5％）。当既没有有限的缓冲区也没有看板/ CONWIP系统可用时，通过按小时释放原材料，所获得的结果为中小型企业提供了管理其生产提前期的可能性。

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